i have a buddy who took the 305 heads off of his 79 malibu. the only number i could find on them was 14014416. it also had GM2 stamped on it. i have an L03 right now, and want to change the heads. he is offering me to take them for $50. would this be a good idea? i AM going to have them port and polished, and also checked for cracks and all, and put on new rockers and valve springs. what is the verdict?

 

14014416...80-86...305..........1.84"/1.5" valves, 58cc chambers here are the specs,,,thats as far as i go with heads

 

Issued: 30 March 1988
Revised: 3 April 1991, 16 May 1991, 15 July 1995, 8-8-95, 1-1-98, 2-16-98, 7-1-99, 03-22-02, 5-13-02
Bulletin #: CHEV-87 Page 1 of 1
Specifications for the 1987 Chevrolet engines



H.P. Disp. Gasket Head Cast

150 305 .016 14020555,14014416,14101081
165/
170 305 .016 14020555,14014416,14101081
180 305 .016 14020555,14014416,14101081


Also used on 78-79 vin G,H,U
And used on 305 "F" up to 1986.

And this from Edelbrock's site.
(B) For 305-350 Chevys, some '77 and later cars have heads #14014416 identified by scalloped-out appearance at bottom. These heads have rotators, but non-rotator springs #5802 must be used with the rotators


Read this article too.
http://www.angelfire.com/nb/thirdgen/343hp305.html


~M~

 

ok, riley said that the intake valve was 1.84, but the site is saying 1.94..which is it? so are these a better design then my POS swirl port heads? and what is a rotator...never heard of it before.

 

Heheh, yeah much better than the swirl ports, get rid of them at all cost I believe the Lunati article said they put the 1.94 valves in themselves.
They seem to be pretty good heads, matched well to the 305's smaller bore.

~M~

 

so these heads are NOT swirl port since they are from an LG4 or HO, correct? he took the rockers off, so i am going to replace those , the valve seals, and should i stay with 1.84 or switch themm out to 1.94 intake valves? i WILL be changing the cam and intake manifold at the same time, so i think changing it would help with the cam.

 

Yep, not swirl port. If you are going to a bigger cam and it is cost effective then go for the larger intake valves. The valves themselves aren't too expensive, but having a machine shop fit them to the heads could be.

~M~

 

Those are the "good" factory 305 heads. They benefit greatly from 1.94" intake valves and porting. They do have, though, press-in rocker studs, so if you're going with a higher lift cam (which means you should get new valve springs, by the way, and toss the rotators), then you should consider having them machined for screw-in studs while they're in the shop. You'll probably need the guides replaced, too. They may also be slightly warped and need surfacing.

You say you're going to "have" them ported & polished - I assume that means you're not doing that yourself. I'd strongly suggest getting a detailed estimate from the shop to have all of the above work done. Assuming no cracks, you'll have a very nice set of thin-casting factory heads to which your LO3 manifold won't bolt directly (you didn't say what you're doing with the induction, but those heads and your manifold have center two bolts at different angles).

For what that will run you, you could get a set of new World S/R 305 Torquer heads and have them pocket ported. Already have screw-in studs and 1.94" intake valves, upgraded springs will come with them, and the castings are thicker where it's needed to reduce cracking potential. Chambers are also reshaped for better combustion properties.

It's up to you, but I didn't have any trouble deciding which way to go. I did the porting and assembly myself, which saved some coin, but I would have done that if I had used stock heads, anyway.

 

five7 you've either got stock in World Products or you're very happy with your heads. I hope it's the latter.

If I had to do it again I would probably follow your advise if buying heads but I did purchase them for a 350. The Vortec's have too many issues such as no egr or manifold heat. That's if you need those things.

Heavy throttle thou the Vortec's boggie

 

i was planning on going with a 4 Bbl weiand intake manifold. how much could i get a set of s/r torquers for?

 

The 416 castings were used on all the 305 F-Bods til 86 (you might find some different casting #'s though)

They are considered the best 305 heads (factory) for performance.

 

It's the latter.

I got mine last sring from Competition Products with upgraded springs & retainers (above .5 lift) for about $650 w/shipping. I understand the price has gone up a little this year, so give them a call and get a real price. My statement above still stands, though.

 

That's great because so often parts don't work as well as hoped for because of one reason or another.

Darrell

 

If you and/or your machine shop upgrade the 416's with a full porting job and 1.94 intakes with a nice 3 angle valve job
you'll have a good budget performance head that will be hard to beat on a 305 for the money. A minor light porting and stock valves won't cut it here thou. The other (non swirl port) centerbolt
valve cover style heads like the "081" castings will have about the same performance potential as the "416"'s once ported and upgraded. Search my posts for flow numbers on 305 heads,
both stock and thoroughly "home ported". You can pin the studs yourself with a drill and some roll pins. A "Louis Tool" can be used to lenghten the machined pushrod guide slot, if 1.6 rockers are planned. Otherwise the as stock machined slot is good enough.

 

I thought the springs from World were 1.25" and rated to .550"